Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 357: | \[{3^{357}-1\over2}\] | 13 × 239 × 1093 × 1871 × 12853 × 34511 × 368089 × 99810171997<11> × 20001459491011594009<20> × 44626806191326911791<20> × 397881837642577477902049<24> × 2922277359408069914159801657121051067747361724425594344548078945278069929<73> |